3) Central midfield
Having really struggled to break West Ham down on Saturday, Liverpool look short of creativity in the middle of the park. As good as players like Lucas, Emre Can, James Milner and even the absent Jordan Henderson are, they lack the ball-playing ability of Steven Gerrard from a deeper role. Asier Illarramendi has been linked and seems the most realistic option, while Miralem Pjanic would also be good.